Question

1. Write a C++ program ask to the user to enter file name to encrypt its content.
Vanmarga files​

Answer 1

I can’t understand
Please tell question properly

Answer 2

Program:

#include<iostream>

#include<fstream>

#include<stdio.h>

using namespace std;

int main()

{

   char name[100], ch;

   fstream file, temp;

   cout<<"Enter the file name (with the extension .txt): ";

   gets(name);

   file.open(name, fstream::in);

   if(!file)

   {

       cout<<"\nError in opening the file you want";

       return 0;

   }

   temp.open("temporary.txt", fstream::out);

   if(!temp)

   {

       cout<<"\nError in opening or creating the temporary file";

       return 0;

   }

   while(file>>ch)

   {

       ch = ch+10;

       temp<<ch;

   }

   file.close();

   temp.close();

   file.open(name, fstream::out);

   if(!file)

   {

       cout<<"\nError in opening the file you want";

       return 0;

   }

   temp.open("temporary.txt", fstream::in);

   if(!temp)

   {

       cout<<"\nError in opening the temporary file";

       return 0;

   }

   while(temp>>ch)

       file<<ch;

   file.close();

   temp.close();

   cout<<"\nFile "<<name<<" Encrypted Successfully!";

   cout<<endl;

   return 0;

}